Diago Micropower9 Universal Pedal Power Supply System It works worldwide - using automatic voltage and frequency sensing circuitry. It powers over 90% of the pedals being offered. Go to www.diago.co.uk/powerstation_compatibility.html for a complete list of pedals that it works with. It is safe - it meets all national and international safety regulations so you or your pedals won't fry. It is QUIET. studio quality components for hum and noise-free operation. It is SMALL - about the size of a laptop power supply. It is TOUGH - it has a heavy duty ABS case that is durable and shock resistant. It is EFFICIENT - it doesn't get hot. The Diago Micropower9 automatically supplies the required amount of current - up to 1,000mA.